Wagyu beef comes from a special breed of cattle that's raised in Japan.

There are different types of Wagyu breeds, like Black-haired and Brown-haired.

These breeds are used to produce marbled meat.

Wagyu beef is highly prized for dishes like sukiyaki, shabu-shabu, and steak.

Generally, Wagyu beef is quite expensive.

In countries outside of Japan, a fake label "Wagyu" is sometimes used to inflate prices.

On the other hand,

Tsukudani is a food that spread among commoners in Edo due to its affordability and good shelf life.

Tsukudani is a type of preserved food.

It's slowly simmered in a sauce made from sugar, soy sauce, and mirin until most of the liquid evaporates.

The sauce gives it a sweet and salty taste.

Tsukudani can be made with small fish, tiny shellfish, vegetables, and seaweed like kelp.